Quotas - Amazon Timestream
Default quotasService limitsSupported data typesBatch loadNaming constraintsReserved keywordsSystem identifiersUNLOAD

For similar capabilities to Amazon Timestream for LiveAnalytics, consider Amazon Timestream for InfluxDB. It offers simplified data ingestion and single-digit millisecond query response times for real-time analytics. Learn more here.

Quotas

This topic describes current quotas, also referred to as limits, within Amazon Timestream for LiveAnalytics. Each quota applies on a per-Region basis unless otherwise specified.

Default quotas

The following table contains the Timestream for LiveAnalytics quotas and the default values.

displayName Description defaultValue

Databases per account

The maximum number of databases you can create per AWS account.

500

Tables per account

The maximum number of tables you can create per AWS account.

50000

Request rate for CRUD APIs

The maximum number of Create/Update/Delete requests allowed per second per account, in the current Region.

1

Request rate for other APIs

The maximum number of List/Describe/Prepare/ExecuteScheduledQueryAPI requests allowed per second per account, in the current Region.

5

Scheduled queries per account

The maximum number of scheduled queries you can create per AWS account.

10000

Maximum count of active magnetic store partitions

The maximum number of active magnetic store partitions per database. A partition might remain active for up to six hours after receiving ingestion.

250

Service limits

The following table contains the Timestream for LiveAnalytics service limits and the default values. To edit data retention for a table from the console, see Edit a table.

displayName Description defaultValue

Future ingestion period in minutes

The maximum lead time (in minutes) for your time series data compared to the current system time. For example, if the future ingestion period is 15 minutes, then Timestream for LiveAnalytics will accept data that is up to 15 minutes ahead of the current system time.

15

Minimum retention period for memory store in hours

The minimum duration (in hours) for which data must be retained in the memory store per table.

1

Maximum retention period for memory store in hours

The maximum duration (in hours) for which data can be retained in the memory store per table.

8766

Minimum retention period for magnetic store in days

The minimum duration (in days) for which data must be retained in the magnetic store per table.

1

Maximum retention period for magnetic store in days

The maximum duration (in days) for which data can be retained in the magnetic store. This value is equivalent to 200 years.

73000

Default retention period for magnetic store in days

The default value (in days) for which data is retained in the magnetic store per table. This value is equivalent to 200 years.

73000

Default retention period for memory store in hours

The default duration (in hours) for which data is retained in the memory store.

6

Dimensions per table

The maximum number of dimensions per table.

128

Measure names per table

The maximum number of unique measure names per table.

8192

Dimension name dimension value pair size per series

The maximum size of dimension name and dimension value pair per series.

2 Kilobytes

Maximum record size

The maximum size of a record.

2 Kilobytes

Records per WriteRecords API request

The maximum number of records in a WriteRecords API request.

100

Dimension name length

The maximum number of bytes for a Dimension name.

60 bytes

Measure name length

The maximum number of bytes for a Measure name.

256 bytes

Database name length

The maximum number of bytes for a Database name.

256 bytes

Table name length

The maximum number of bytes for a Table name.

256 bytes

QueryString length in KiB

The maximum length (in KiB) of a query string in UTF-8 encoded characters for a query.

256

Execution duration for queries in hours

The maximum execution duration (in hours) for a query. Queries that take longer will timeout.

1
Query Insights The maximum number of Query API requests allowed with query insights enabled per second per account, in the current Region. 1

Metadata size for query result

The maximum metadata size for a query result.

100 Kilobytes

Data size for query result

The maximum data size for a query result.

5 Gigabytes

Measures per multi-measure record

The maximum number of measures per multi-measure record.

256

Measure value size per multi-measure record

The maximum size of measure values per multi-measure record.

2048

Unique measures across multi-measure records per table

The unique measures in all the multi-measure records defined in a single table.

1024
Timestream Compute Units (TCUs) per account The default maximum TCUs per account. 200
Maximum Provisioned Timestream Compute Units (TCUs) per account.
Note

Provisioned TCU is available only in the Asia Pacific (Mumbai) region.

 The maximum number of TCUs you can provision in your account. 1000
maxQueryTCU The maximum query TCUs you can set for your account. 1000

Supported data types

The following table describes the supported data types for measure and dimension values.

Description Timestream for LiveAnalytics value

Supported data types for measure values.

Big int, double, string, boolean, MULTI, Timestamp

Supported data types for dimension values.

String

Batch load

The current quotas, also referred to as limits, within batch load are as follows.

Description Timestream for LiveAnalytics value

Max batch load task size

Max batch load task size cannot exceed 100 GB.

Files quantity

A batch load task cannot have more than 100 files.

Maximum file size

Maximum file size in a batch load task cannot exceed 5 GB.

CSV file row size

A row in a CSV file cannot exceed 16 MB. This is a hard limit which cannot be increased.

Active batch load tasks

A table cannot have more than 5 active batch load tasks and an account cannot have more than 10 active batch load tasks. Timestream for LiveAnalytics will throttle new batch load tasks until more resources are available.

Naming constraints

The following table describes naming constraints.

Description Timestream for LiveAnalytics value

The maximum length of a dimension name.

60 bytes

The maximum length of a measure name.

256 bytes

The maximum length of a table name or database name.

256 bytes

Table and Database Name

  • We recommend you do not use System identifiers.

  • Can contain a-z A-Z 0-9 _ (underscore) - (dash) . (dot).

  • All names must be encoded as UTF-8, and are case sensitive.

Note

Table and database names are compared using UTF-8 binary representation. This means that comparison for ASCII characters is case sensitive.

Measure Name

  • Must not contain System identifiers or colon ':'.

  • Must not start with a reserved prefix (ts_, measure_value).

Note

Table and database names are compared using UTF-8 binary representation. This means that comparison for ASCII characters is case sensitive.

Dimension Name

  • Must not contain System identifiers, colon ':' or double quote (").

  • Must not start with a reserved prefix (ts_, measure_value).

  • Must not contain Unicode characters [0,31] listed here or "\u2028" or "\u2029".

Note

Dimension and measure names are compared using UTF-8 binary representation. This means that comparison for ASCII characters is case sensitive.

All Column Names

Column names can not be duplicated. Since multi-measure records represent dimensions and measures as columns, the name for a dimension can not be the same as the name for a measure. Names are case sensitive.

Reserved keywords

All of the following are reserved keywords:

  • ALTER

  • AND

  • AS

  • BETWEEN

  • BY

  • CASE

  • CAST

  • CONSTRAINT

  • CREATE

  • CROSS

  • CUBE

  • CURRENT_DATE

  • CURRENT_TIME

  • CURRENT_TIMESTAMP

  • CURRENT_USER

  • DEALLOCATE

  • DELETE

  • DESCRIBE

  • DISTINCT

  • DROP

  • ELSE

  • END

  • ESCAPE

  • EXCEPT

  • EXECUTE

  • EXISTS

  • EXTRACT

  • FALSE

  • FOR

  • FROM

  • FULL

  • GROUP

  • GROUPING

  • HAVING

  • IN

  • INNER

  • INSERT

  • INTERSECT

  • INTO

  • IS

  • JOIN

  • LEFT

  • LIKE

  • LOCALTIME

  • LOCALTIMESTAMP

  • NATURAL

  • NORMALIZE

  • NOT

  • NULL

  • ON

  • OR

  • ORDER

  • OUTER

  • PREPARE

  • RECURSIVE

  • RIGHT

  • ROLLUP

  • SELECT

  • TABLE

  • THEN

  • TRUE

  • UESCAPE

  • UNION

  • UNNEST

  • USING

  • VALUES

  • WHEN

  • WHERE

  • WITH

System identifiers

We reserve column names "measure_value", "ts_non_existent_col" and "time" to be Timestream for LiveAnalytics system identifiers. Additionally, column names may not start with "ts_" or "measure_name". System identifiers are case sensitive. Identifiers compared using UTF-8 binary representation. This means that comparison for identifiers is case sensitive.

Note

System identifiers may not be used for dimension or measure names. We recommend you do not use system identifiers for database or table names.

UNLOAD

For limits related to the UNLOAD command, see Using UNLOAD to export query results to S3 from Timestream.